It has a double-sided diamond nail file, including 60 pack black nail files, one side has a grit of 100, one side has a grit of 180, and the middle is a foam layer. The surface is made of high-quality emery board material, which is very wear-resistant. Double-sided use, 100 grit one side is coarser, suitable for grinding hard nails or toenails, 180 grit one side has finer particles, suitable for delicately modifying the edge of the nail to make it more round and bright. Trim and shape your nails to the desired shape and length. The nail file can be washed with water after use, and can be reused after cleaning, which is very suitable for home use. Size: 179 x 19 x 4 mm / 7 x 0.75 x 0.16 inches. Suitable for nail salon use, wear-resistant nail file can be suitable for all kinds of nails, natural nails, acrylic nails, acrylic nails, nail cuticles, nail retouching, nail shaping, nail polishing, etc., perfect for girls who love nail art and nail art lovers. Product Specification: Product Size: 179 x 19 x 4 mm / 7 x 0.75 x 0.16 inches. Double - Sides: 100 and 180 grit Color: black How to Apply? File and rough up your hard finger nail and toe nail with 100 grit Use 180 grit smooth up nail edge with refined shape Grind surface of nails with 180 grit side nail file Then start your DIY nails Package Including 60 Nails Files